[Strangely enough, Starscream has been the only one to outright tell him that. Sure, he's gotten the general message that Tarn is bad news, but no one's really told him to avoid him altogether. Probably because most of them assume he has common sense.]

...

You know.

I never really asked.

Sometimes you just happen to find yourself inside a whale. It's the kind of thing that happens to people. A couple months ago everyone got romantically paired up with someone else, so you just accept these things and move on.